"The 8 x 10 km wide Ile aux Cochons, at the western end of the Crozet Islands, is a single stratovolcano with a small summit caldera and more than 60 scoria cones. The production of phreatomagmatic breccias inter-bedded with thin lava flows was followed by block faulting and the eruption of scoria cones and lava flows along four radial fracture systems. Bellair (1964) considered the Morne Rouge cone on the eastern coast to be even younger than an estimated several-hundred-year-old cone on Possession Island." -Smithsonian Volcano Archive